Using Apache Ambari

Before you can access Apache Ambari from a browser, an administrator must:

• Make the node available to incoming connections from users. The node's private IP address can be mapped to a public IP address, which permits access from the public internet. Alternatively, the cluster can be set up to use a bastion host or Oracle FastConnect. See Connecting to Cluster Nodes with Private IP Addresses.

• Open port 7183 on the node by configuring the ingress rules in the network security list. See Defining Security Rules.

Using the top toolbar (1)

• While using Apache Ambari, click the Ambari logo, home icon, or the Dashboard link to return to the dashboard.
• View the name of your cluster on the right side of the toolbar.
• View the number of background operations running on your cluster next to the gear icon. Click the gear icon to view details on all the background operations. You can filter the operations based on their status. You can click each opeartion name to view further details about the operation, such as hosts, tasks, and task logs.
• View the number of notifications next to the bell icon. Click the bell icon to view notification details. You can filter the notifications based on whether it is a critical alert or a warning. Click View All to open the Alerts page. You can view alerts details, and manage the alerts and notifications.
• Click the grid icon to view cluster views.
• View the username you used to log into Apache Ambari next to the profile icon. Use the dropdown menu for more options to manage your user profile.

Using the tabs and dropdown menus (2)

• The Metrics tab is the default tab that displays when you access the dashboard. It contains various widgets that help you monitor the status of your entire cluster at a glance. You can click some widgets to view additional information. For example, Memory Usage and Network Usage. You can edit or delete a widget by using the menu icon for each widget.

  You can use the Metric Actions dropdown to add or edit the widgets.

  You can apply a time period to all the widgets by using the time dropdown.

  Note
  
  You can customize the metrics that are displayed by using Apache Ambari views.
• The Heatmaps tab displays cluster metrics as colored heatmaps, going from green to red. You can select the metric for which you want to view the heatmap.
• The Config History tab lists the versions of the services installed after the initial creation of the cluster.

Using the side toolbar (3)

• The Services option lists all the services installed on your cluster. You can add additional services that are not installed by default by using the … icon. Click each service to view detailed information about that service on our cluster. The information displayed depends on the service you want to view. For example, if you click HDFS you can view Summary, Heatmaps, Configs, and Metrics tabs. Some services have useful Quick Links service specific web interfaces. Each service also has an Actions dropdown with various options depending on the service.
• The Hosts option lists details for the nodes in your cluster. You can add new hosts or manage the existing hosts using the Actions dropdown.
• The Alerts option displays a log of all the alerts, cirtical and warnings, received for your cluster. Use the Actions dropdown to manage alerts and notifications.
• The Cluster Admin option provides additional options for you to manage your cluster. Click Stack and Versions to view the various software or services installed on the clusters. Click Service Accounts to view users and groups for each service on your cluster. Click Kerberos to view the security configurations for your cluster. Click Service Auto Start to manage what services should be started automatically. By default, all services are configured to auto start.